Especially when trying to make sense of the "ins and outs" (as it were) of her granddaughter's lesbian relationship.
Check out this shockingly sweet (and it is, when you remember in her day she and the parish priest would have beat her granddaughter for being a wicked pervert and Satanist) video documenting all of the glorious confusion.
Given the time she had grasping the simple act of going down on her lover, I think it is safe to assume her head would have exploded if her granddaughter tried to cover strap-ons...
Oh, and let's not go getting all righteously indignant at her belittling of the beautiful act of hot girl on girl canoodling... If you can take your lover working your ovaries like a Muppet, you can take Grammie being a bit befuddled.